CUED Publications database

Deep Roots: Improving CNN Efficiency with Hierarchical Filter Groups

Ioannou, Y and Robertson, D and Cipolla, R and Criminisi, A (2017) Deep Roots: Improving CNN Efficiency with Hierarchical Filter Groups. In: The IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2017-7-21 to 2017-7-26, Honolulu, Hawaii, USA.

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Abstract

We propose a new method for creating computationally efficient and compact convolutional neural networks (CNNs) using a novel sparse connection structure that resembles a tree root. This allows a significant reduction in computational cost and number of parameters compared to state-of-the-art deep CNNs, without compromising accuracy, by exploiting the sparsity of inter-layer filter dependencies. We validate our approach by using it to train more efficient variants of state-of-the-art CNN architectures, evaluated on the CIFAR10 and ILSVRC datasets. Our results show similar or higher accuracy than the baseline architectures with much less computation, as measured by CPU and GPU timings. For example, for ResNet 50, our model has 40% fewer parameters, 45% fewer floating point operations, and is 31% (12%) faster on a CPU (GPU). For the deeper ResNet 200 our model has 25% fewer floating point operations and 44% fewer parameters, while maintaining state-of-the-art accuracy. For GoogLeNet, our model has 7% fewer parameters and is 21% (16%) faster on a CPU (GPU).

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: cs.NE cs.NE cs.CV cs.LG Deep Learning Computer Vision Neural Networks
Subjects: UNSPECIFIED
Divisions: Div F > Machine Intelligence
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 20:14
Last Modified: 07 Sep 2017 01:42
DOI: